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#include <stdio.h>
 
#define SPLICE(a, b) INNER_SPLICE(a, b)
#define INNER_SPLICE(a, b) a ## b
#define STRINGIFY(a) INNER_STRINGIFY(a)
#define INNER_STRINGIFY(a) #a
 
#define FIFTY_SEVEN 57
 
#define FORTY_EIGHT 48
#undef  FORTY_EIGHT
 
struct outer
{
  struct fields
  {
    struct fault
    {
      int addr;
    } fault;
  } fields;
};
struct outer address;
 
#define addr fields.fault.addr
 
/* A macro named UNTIL_<func> is #defined until just before the
   definition of the function <func>.
 
   A macro named BEFORE_<func> is not #defined until just before the
   definition of <func>.
 
   The macro WHERE is redefined before each function <func> to the
   token list ``before <func>''.
 
   The macscp IN_MACSCP2_H and IN_MACSCP3_H are defined while
   processing those header files; macscp4.h uses them to choose
   appropriate function names, output strings, and macro definitions.  */
 
#define UNTIL_MACSCP1_1
#define UNTIL_MACSCP2_1
#define UNTIL_MACSCP4_1_FROM_MACSCP2
#define UNTIL_MACSCP4_2_FROM_MACSCP2
#define UNTIL_MACSCP2_2
#define UNTIL_MACSCP1_2
#define UNTIL_MACSCP3_1
#define UNTIL_MACSCP4_1_FROM_MACSCP3
#define UNTIL_MACSCP4_2_FROM_MACSCP3
#define UNTIL_MACSCP3_2
#define UNTIL_MACSCP1_3
 
#define WHERE before macscp1_1
#define BEFORE_MACSCP1_1
#undef UNTIL_MACSCP1_1
void
macscp1_1 ()
{
  puts ("macscp1_1");
}
 
#include "macscp2.h"
 
#undef WHERE
#define WHERE before macscp1_2
#define BEFORE_MACSCP1_2
#undef UNTIL_MACSCP1_2
void
macscp1_2 ()
{
  puts ("macscp1_2");
}
 
#include "macscp3.h"
 
#undef WHERE
#define WHERE before macscp1_3
#define BEFORE_MACSCP1_3
#undef UNTIL_MACSCP1_3
void
macscp1_3 ()
{
  puts ("macscp1_3");
}
 
void
macscp_expr (void)
{
  int foo = -1;
 
  foo = 0;  /* set breakpoint here */
#define MACRO_TO_EXPAND foo
  foo = 1;
#undef MACRO_TO_EXPAND
  foo = 2;
}
 
#define TWENTY_THREE 23
 
int
main (int argc, char **argv)
{
  macscp1_1 ();
  macscp2_1 ();
  macscp4_1_from_macscp2 ();
  macscp4_2_from_macscp2 ();
  macscp2_2 ();
  macscp1_2 ();
  macscp3_1 ();
  macscp4_1_from_macscp3 ();
  macscp4_2_from_macscp3 ();
  macscp3_2 ();
  macscp1_3 ();
  macscp_expr ();
}